Six-wheel truck



y 28, 1929- J. P. MADDEN 5 AL I 1,714,79

S IX-WHEEL TRUCK Filed Jan. 1:5, 3.928 2 Sheets-Sheet 1 INVENTORS James EMaddea m flarl 6. i arais'fi' 11 ATTORNEY Patented May 28, 1929.

UNITED STATES JAMES P. MADDEN AND CARL 1,714,796 PATENT ()FFICE.

G. NORDSTROM, OF BETHLEHEM, PENNSYLVANIA ASSIGNORS TO IBE'IHLIEHIEJYII STEEL COMPANY.

SIX-WHEEL TRUCK.

Application filed January 13, 1928. Serial No. 246,401.

Our invention relates to improvements in railway trucks and more especially to trucks of the six-wheeled type.

One of the objects of'our invention is to provide asixwheeled truck construction for locomotive tenders Suitable for the application of an auxiliary locomotive in which the application of the load upon the axles is more equally distributed between the three axles.

Another object of our. invention is to form a spring'support between the rear two axles so that the central portion of the truck frame at this point will be more fully sustained and resiliently supported along the center line of the truck With these objects in View: our invention consists in the construction and novel combination and arrangement of parts, hereinafter more fully described andillustrated in the accompanying drawings and pointed out in the, claims hereto appended.

Having thus given a general description of our invention, wewill now' in order to make the same mo e clear, refer to the accompanying two sheets of drawings in which like charactersof'reference indicate like parts j I Figg lfis a topjplan view of a -six-wheeled truck 'a portion 'ofthe'truck frame broken away to more clearly'illustrate the application of our invention;

Fig.2 is aside elevation of the truck shown thes shan e s- Referring now tothe characters of reference on the'drawings; the numeral 1 indicates the truck frame as a whole preferably of integral past constructipn', comprising spaced side frames "or wheel pieces Q'fhaving downrespectively all fwith the wheel pieces. g

11 are of hollow'box section and are connected Pedestal t'af d The W e P e 2 a e. w,

1y iconne'c'ted'fto'gether at their for by means'ofa tie bar 6; andcen ingsQia d i pflltalfld rear tra'nsoms 10 andfll of which are formed integral [The transoms 10 and to centerplate bearingportion 8 by means of span webs 12 and 13. .The aligned pairs of vshaped construction having to a six-wheeled truck,

axle spaced fairly closeto one ing a spring plank 30 extending of shaped bolster mem px s a a ti i te ng. p e tion 8 having" outwardly extending side bear of the wheel pedestals 3, 4 and 5 are adaptedto receive bearing boxes 14, 15 and 16 in which are journaled the ends of the axles 17, 18 and 19 respectively. 20 indicates equalizer bars mounted in pairs one on eachside of the wheel pieces. These equalizer bars are of U- 21, offset as at 22, to engage sockets 23 and 24 formed on top of the journal boxes for the axles 17 and 18. The equalizer bars are connected together centrally by means of spring scat plates 25, for receiving helical springs 26, which are interposed between spring sockets 27 formed on the under side of the wheel'pieces between the pedestals 3 and 4 at the ends of the transom 10. I

In order to apply an .auxiliary locomotive between a pair of axles, it is'necessary that two of the axles should be spaced apart far enough to accommodate .the engine and frame. In order to conform with conventional practice with rehorizontal ends gards to the spacing of the outer axles, it is necessary to have the other or,

ofthe end on outer axles. With the type of locomotive "luxiliary propulsion device is proposed to'mount on a truck of the class shown in this application the forward portion of the-auxiliary engine frame will be supported'by bearings (not shown) -mounted on each side of the gear. 28 on the axle 17, while the rear portion of the auxliary engine frame will be suspended-from theb link 29 pivotally secured to the span we 12.

intermediate As the major portion of the Weight'o'f the auxiliary engine is sustained by the link 29"" and the entire weight of the body of the loco motive tender is 'receivedupon thecenter re u y Support the 5 plate, it is desirable'to m central rear portion of the truck frame To this end we forma resilientsupport for rear central portion of the bolster coin'p'ris i V transversely of the truck between the' center andrc'ar axles of the-"truck, having its ends V formed ivith" grooved-sockets 31 for engaging swlng hang ers 32 "which are each pivoted by'meansof pins 33'to anequalizing device, each comprisinga pair of pieces. The central portions of" the yokes 35 are offset as'at 36 to engage sockets 37 formed injthe tops of the journal boxes 16 of the rear axle 19. The opposite ends of I05 yokes 34 mounted on either'si'de the yokcs are secured by means of pins 38 to spring seat plates 39 for receiving helical springs 40 which are interposed between the spring sockets 41 in the rear ends of the wheel pieces of the truck frame and the spring plates. The spring pla is of I-beam cross section and bowed :awnwardly at the central portion, the ilfln at the central portion being of greater Xluill than at the ends. r central portion is formed with g its 42 for receiving helical springs posed between the spring on the under face of'the transom 1'1 and spring seats 42.

In supportin the-rear central portion of the truck in this manner we are able to e ualsize and distribute the weight of the true onthe springs to a much greater advantage than has been obtained heretofore.

Although we have shown and described our invention in considerable detail, we do not iIng ar truck, comprising spaced wheel wish to be limited to the exact and specific details-shown and described,'but may use such substitutions, modifications or equivalents thereof as are embraced within the scope of our-invention or as pointed out'in the claims.

Having thus described our invention what we claim and desire to secure by Letters Patcut is:

1. In a car truck, comprising side frames, a bolster having spaced transoms connecting the side .frames, a spring-plank mounted below-one of the transoms, and springs mounted on the spring-plank for supporting the tranpieces,"a'bolster connecting the wheel pieces, a spring-plank mounted between the central and one of the end axles of the truck, a transom.

3. In a six-wheeled truck, comprising spaced wheel pieces, a transom connecting the wheel pieces together, a spring-plank mounted below the transom, and springs mounted onthe spring plank for supporting the transom.

4. In a six-wheeled truck, comprising spaced .wheel pieces, a transom rigidly con necting the wheel pieces together, a springplank movablymounted below the transom, and springsinterposed between the transom and spring-plank for. supporting the tran som.

5; In a six-wheeled truck, comprising spaced wheel pieces, a transom connecting the wheel pieces together, a spring-plank having its ends mounted in swing-hangers belowithe transom, and springs interposed between the transom and spring-plank at an intermediate point for supporting the transom.

6. In a six-wheeled truck, comprising ends of the spring-plank, and springs interposed between the transom and spring-plank an intermediate point for supporting the transom.

In asix-wheeledtruck,comprisingspaced wheel picces'having pedestals formed thereon, a transom connecting the wheel pieces togethcr, at a point between one of'the outer axles and intermediate axle, journal boxes carried by the jaws of the pedestals, yokes extending over the journal boxes for the end axle having their central portions bearing thereon, means for resiliently holding the outer ends of the yoke, 'swing-hangersattached to the opposite ends of the yokes,-a springplank beneath the transom havin \its ends prings '1 supported by the swing-hangers, an interposed between the spring-plank and the transom. r

8. In a six-wheeled truck, comprising spaced wheel pieces having pedestals formed integral therewith, journal boxes mounted between the pedestals, a transom rigidly connecting the wheel pieces together at a point between one of the outer axles and inter mediate axle, okes arranged in pairs on each side of the w eel'pieces extendin over .the ournal boxes of the outer axle an engaging therewith, a spring-plate pivotally attached I to the outer ends of each pair of-yokes, sprlngs interposed between the spring-plate and the wheel pieces, a swingi-hafng'e rjivotally connected between the opposite ends of the yokes, a spring-plank havin its ends mounted in the swing-hangers, and springs interposed between the spring-plank and the transom.

9. In a six-wheeled truck, com rising spaced Wheel pieces having pedestals ormed integral therewith, journal boxes mounted between the jaws of the pedestals, a transom connecting the wheel pieces together at a.

point between one of the outer axles and intermediate axle, a pair of sockets formed in the tops of each of the journal boxes for the outer axle, said sockets being located one on each sideof each wheel piece, yokes each having an offset central portion for engaging the sockets of the journal boxes arranged in pairs one on each side of the wheel pieces, a springplate pivotally attached to and connecting together the outer ends of each pair of yokes, springs interposed between the spring-plates and the wheel pieces, a swing-hanger pivotally connected between the opposite ends pf each pair of- 'yokes, a spring-plank havingits ends formed withtsocketed grooves for engaging the swing-hingers, and springs Interposed centrally between the spring-plank and the transom.

10. In a six-wheeled truck, comprising spaced wheel pieces having downwardly extending pedestal jaws formed integral there with, a transom formed integral with the wheel pieces for connecting the wheel pieces together at a point between one of the outer axles and intermediate axle, journal boxes v carried by the jaws of the pedestals, sockets formed in the to of each journal box, yokes extending over tlie journal boxes for the end axle having their central portions offset to en gage the sockets formed in the top of the journal boxes, spring-plates attached to the outer ends of the yokes, springs interposed between spring-plates and the wheel pieces, swinghangers attached to the opposite ends of the yokes, a springplank mounted beneath the transom having its ends supported by the swing-hangers, and springs interposed between the spring-plank and the transom.

11. In a six-wheeled truck, comprising spaced wheel pieces having downwardly extending pedestal jaws formed integral therewith, a transom formed integral with the wheel pieces for connecting the wheel pieces together at a point between one of the outer axles and intermediate axle, journal boxes carried by the jaws of the pedestals, sockets formed in the top of each -journal box, on either side of the wheel pieces, yokes extend ing over the journal boxes for the end axle arranged in pairs one on each of the wheel pieces each having their central portions 011'- set to engage the sockets formed in the top of the journal boxes, a spring-plate pivot ally connecting the outer ends of each pair of yokes below the wheel pieces, springs interposed between the spring-jiilates and the wheel pieces, swing-hangers pivotally connecting the opposite ends of each pair of yokes, a spring-plank mounted beneath the transom having its ends formed with grooved sockets for engaging the swing-hangers, and springs interposed between the central portions of the transom and spring-plank.

In testimony whereof we hereunto aflix our signatures.

JAMES P. MADDEN. CARL G. NORDSTROM. 

